U.S. Attorney for the District of Maryland Rod J. Rosenstein, right, speaks at a news conference in Baltimore, Wednesday, March 1, 2017, to announce that seven Baltimore police officers who worked on a firearms crime task f… . Baltimore Police Department Commissioner Kevin Davis, center, shakes hands with U.S. Attorney for the District of Maryland Rod J. Rosenstein after a news conference in Baltimore, Wednesday, March 1, 2017, to announce that s… .